There are two types of basement that Benjamin Allen are able to offer. These include Masonary Construction and Reinforced Concrete Construction.
Masonry construction is the simplest method of basement construction: a concrete floor slab is formed in the base of an excavation, the sides of which are either supported by temporary works or battered back for safe working. The basement floor slab will need to be formed with water barriers linked into the masonry basement walls. Access to the outside of the basement walls during construction also allows an external water barrier to be applied. This method is the most straightforward and permits good access for installing these barriers. Any drainage outside the basement wall can be installed before the excavation is backfilled and before the temporary earth support is removed.
Reinforced Concrete Construction
Basement walls can be constructed in cast-in-situ reinforced concrete, with water barriers included in the cast-in joints. The outside of the finished wall is accessible for inspection and for the application of a secondary external water barrier and drainage systems.
Concrete construction usually includes the water resistance in the structure where the concrete contributes to the overall water resistance. Subject to the risk severity of the site, the concrete wall may need an additional water resisting membrane. Admixtures may also be added to the concrete to enhance its water resistance.
The types of construction depends on your site circumstances and preference. If you wish to discuss please contact us for an informal discussion on the options and some budgetary guidelines. If you are already part way through the design process we can review waterproofing detail and provide a quotation for carrying out the works on your project.